<template>
  <div class="wl-transfer transfer" :style="{ width, height }">
    <template v-if="mode == 'transfer'">
      <!-- 左侧穿梭框 原料框 -->
      <div class="transfer-left">
        <h3 class="transfer-title">
          <el-checkbox
            :indeterminate="from_is_indeterminate"
            v-model="from_check_all"
            @change="fromAllBoxChange"
          ></el-checkbox>
          <span>{{ fromTitle }}</span>
          <slot name="title-left"></slot>
        </h3>
        <!-- 内容区 -->
        <div class="transfer-main">
          <slot name="from"></slot>
          <el-input
            v-if="filter"
            :placeholder="placeholder"
            v-model="filterFrom"
            size="small"
            class="filter-tree"
          ></el-input>
          <el-tree
            ref="from-tree"
            show-checkbox
            :lazy="lazy"
            :node-key="node_key"
            :load="leftloadNode"
            :props="defaultProps"
            :data="self_from_data"
            :default-expand-all="openAll"
            :highlight-current="highLight"
            :render-content="renderContentLeft"
            :filter-node-method="filterNodeFrom"
            :default-checked-keys="defaultCheckedKeys"
            :default-expanded-keys="from_expanded_keys"
            @check="fromTreeChecked"
          ></el-tree>
          <slot name="left-footer"></slot>
        </div>
      </div>
      <!-- 穿梭区 按钮框 -->
      <div class="transfer-center">
        <template v-if="button_text">
          <p class="transfer-center-item">
            <el-button
              type="primary"
              @click="addToAims(true)"
              :disabled="from_disabled"
            >
              {{ fromButton || "添加" }}
              <i class="el-icon-arrow-right"></i>
            </el-button>
          </p>
          <p class="transfer-center-item">
            <el-button
              type="primary"
              @click="removeToSource"
              :disabled="to_disabled"
              icon="el-icon-arrow-left"
              >{{ toButton || "移除" }}</el-button
            >
          </p>
        </template>
        <template v-else>
          <p class="transfer-center-item">
            <el-button
              type="primary"
              @click="addToAims(true)"
              icon="el-icon-arrow-right"
              circle
              :disabled="from_disabled"
            ></el-button>
          </p>
          <p class="transfer-center-item">
            <el-button
              type="primary"
              @click="removeToSource"
              :disabled="to_disabled"
              icon="el-icon-arrow-left"
              circle
            ></el-button>
          </p>
        </template>
      </div>
      <!-- 右侧穿梭框 目标框 -->
      <div class="transfer-right">
        <h3 class="transfer-title">
          <el-checkbox
            :indeterminate="to_is_indeterminate"
            v-model="to_check_all"
            @change="toAllBoxChange"
          ></el-checkbox>
          <span>{{ toTitle }}</span>
          <slot name="title-right"></slot>
        </h3>
        <!-- 内容区 -->
        <div class="transfer-main">
          <slot name="to"></slot>
          <el-input
            v-if="filter"
            :placeholder="placeholder"
            v-model="filterTo"
            size="small"
            class="filter-tree"
          ></el-input>
          <el-tree
            slot="to"
            ref="to-tree"
            show-checkbox
            :lazy="lazyRight"
            :data="self_to_data"
            :node-key="node_key"
            :props="defaultProps"
            :load="rightloadNode"
            :default-expand-all="openAll"
            :highlight-current="highLight"
            :render-content="renderContentRight"
            :filter-node-method="filterNodeTo"
            :default-expanded-keys="to_expanded_keys"
            @check="toTreeChecked"
          ></el-tree>
          <slot name="right-footer"></slot>
        </div>
      </div>
    </template>
    <template v-else-if="mode == 'addressList'">
      <!-- 左侧穿梭框 原料框 -->
      <div class="transfer-left">
        <h3 class="transfer-title">
          <el-checkbox
            :indeterminate="from_is_indeterminate"
            v-model="from_check_all"
            @change="fromAllBoxChange"
          ></el-checkbox>
          <span>{{ fromTitle }}</span>
        </h3>
        <!-- 内容区 -->
        <div class="transfer-main">
          <slot name="from"></slot>
          <el-input
            v-if="filter"
            :placeholder="placeholder"
            v-model="filterFrom"
            size="small"
            class="filter-tree"
          ></el-input>
          <el-tree
            ref="from-tree"
            show-checkbox
            :node-key="node_key"
            :props="defaultProps"
            :data="self_from_data"
            :default-expand-all="openAll"
            :highlight-current="highLight"
            :render-content="renderContentLeft"
            :filter-node-method="filterNodeFrom"
            :default-expanded-keys="from_expanded_keys"
            @check="fromTreeChecked"
          ></el-tree>
        </div>
      </div>
      <!-- 穿梭区 按钮框 -->
      <div class="transfer-center address-list-center">
        <p
          class="transfer-center-item"
          v-show="!move_up"
          :class="{ 'address-only-item': addressOptions.num === 1 }"
        >
          <el-button
            type="primary"
            @click="addressListTransfer(0)"
            icon="el-icon-arrow-right"
            circle
            class="address-first-btn"
            :disabled="from_disabled"
          ></el-button>
        </p>
        <p class="transfer-center-item" v-if="addressOptions.num > 1">
          <el-button
            type="primary"
            @click="addressListTransfer(1)"
            :disabled="from_disabled"
            icon="el-icon-arrow-right"
            circle
          ></el-button>
        </p>
        <p class="transfer-center-item" v-show="move_up">
          <el-button
            type="primary"
            @click="addressListTransfer(2)"
            :disabled="from_disabled"
            icon="el-icon-arrow-right"
            circle
          ></el-button>
        </p>
      </div>
      <div class="transfer-right">
        <div
          class="transfer-right-item"
          :class="{
            'transfer-right-small': move_up,
            'transfer-right-only': addressOptions.num === 1,
          }"
        >
          <h3 class="transfer-title">
            <span>{{ toTitle }}</span>
            <span class="u-clear" @click="clearList(0, 'all')" v-if="!move_up"
              >清空</span
            >
            <img
              class="move_up_img move_down_img"
              v-else
              src="./shang.png"
              alt
              @click="moveUp('down')"
            />
          </h3>
          <!-- 内容区 -->
          <div class="transfer-main" v-if="!move_up">
            <slot name="to"></slot>
            <el-input
              v-if="filter"
              :placeholder="placeholder"
              v-model="filterListFirst"
              size="small"
              class="filter-tree"
            ></el-input>
            <ul class="address-list-ul">
              <li
                class="address-list-li"
                v-for="item of addressee"
                :key="item[node_key]"
              >
                <label>
                  {{ item[defaultProps.label] }}
                  {{ addressOptions.connector }}
                  {{ item[addressOptions.suffix] }}
                </label>
                <i
                  class="address-list-del el-icon-delete"
                  @click="clearList(0, item[node_key])"
                ></i>
              </li>
            </ul>
          </div>
        </div>
        <div class="transfer-right-item" v-if="addressOptions.num >= 2">
          <h3 class="transfer-title">
            <span>{{ toTitleSecond || "抄送人" }}</span>
            <span class="u-clear" @click="clearList(1, 'all')">清空</span>
          </h3>
          <!-- 内容区 -->
          <div class="transfer-main">
            <slot name="to"></slot>
            <el-input
              v-if="filter"
              :placeholder="placeholder"
              v-model="filterListSecond"
              size="small"
              class="filter-tree"
            ></el-input>
            <ul class="address-list-ul">
              <li
                class="address-list-li"
                v-for="item of Cc"
                :key="item[node_key]"
              >
                <label>
                  {{ item[defaultProps.label] }}
                  {{ addressOptions.connector }}
                  {{ item[addressOptions.suffix] }}
                </label>
                <i
                  class="address-list-del el-icon-delete"
                  @click="clearList(1, item[node_key])"
                ></i>
              </li>
            </ul>
          </div>
        </div>
        <div
          v-if="addressOptions.num === 3"
          class="transfer-right-item"
          :class="{ 'transfer-right-small': !move_up }"
        >
          <h3 class="transfer-title">
            <span>{{ toTitleThird || "密送人" }}</span>
            <span class="u-clear" @click="clearList(2, 'all')" v-if="move_up"
              >清空</span
            >
            <img
              class="move_up_img"
              v-else
              src="./shang.png"
              alt
              @click="moveUp('up')"
            />
          </h3>
          <!-- 内容区 -->
          <div class="transfer-main" v-if="move_up">
            <slot name="to"></slot>
            <el-input
              v-if="filter"
              :placeholder="placeholder"
              v-model="filterListThird"
              size="small"
              class="filter-tree"
            ></el-input>
            <ul class="address-list-ul">
              <li
                class="address-list-li"
                v-for="item of secret_receiver"
                :key="item[node_key]"
              >
                <label>
                  {{ item[defaultProps.label] }}
                  {{ addressOptions.connector }}
                  {{ item[addressOptions.suffix] }}
                </label>
                <i
                  class="address-list-del el-icon-delete"
                  @click="clearList(2, item[node_key])"
                >
                </i>
              </li>
            </ul>
          </div>
        </div>
      </div>
    </template>
  </div>
</template>

<script>
import { arrayToTree, valInDeep } from 'wl-core'

export default {
  data() {
    return {
      from_is_indeterminate: false, // 源数据是否半选
      from_check_all: false, // 源数据是否全选
      to_is_indeterminate: false, // 目标数据是否半选
      to_check_all: false, // 目标数据是否全选
      from_expanded_keys: [], // 源数据展开节点
      to_expanded_keys: [], // 目标数据展开节点
      from_disabled: true, // 添加按钮是否禁用
      to_disabled: true, // 移除按钮是否禁用
      from_check_keys: [], // 源数据选中key数组 以此属性关联穿梭按钮，总全选、半选状态
      to_check_keys: [], // 目标数据选中key数组 以此属性关联穿梭按钮，总全选、半选状态
      filterFrom: '', // 源数据筛选
      filterTo: '', // 目标数据筛选
      filterListFirst: '', // 通讯录模式 右1筛选
      filterListSecond: '', // 通讯录模式 右2筛选
      filterListThird: '', // 通讯录模式 右3筛选
      archiveFirst: [], // 存档右侧筛选前数据
      archiveSecond: [], // 存档右侧筛选前数据
      archiveThird: [], // 存档右侧筛选前数据
      addressee: [], // 收件人列表
      Cc: [], // 抄送人列表
      secret_receiver: [], // 密送人列表
      move_up: false // 通讯录模式 切换右侧
    }
  },
  props: {
    sjr: {
      type: Array,
      default: () => {
        return []
      }
    },
    csr: {
      type: Array,
      default: () => {
        return []
      }
    },
    msr: {
      type: Array,
      default: () => {
        return []
      }
    },
    // 宽度
    width: {
      type: String,
      default: '100%'
    },
    // 高度
    height: {
      type: String,
      default: '320px'
    },
    // 标题
    title: {
      type: Array,
      default: () => ['源列表', '目标列表']
    },
    // 穿梭按钮名字
    button_text: Array,
    // 源数据
    from_data: {
      type: Array,
      default: () => []
    },
    // 选中数据
    to_data: {
      type: Array,
      default: () => []
    },
    // el-tree 配置项
    defaultProps: {
      type: Object,
      default: () => {
        return { label: 'label', children: 'children' }
      }
    },
    // el-tree node-key 必须唯一
    node_key: {
      type: String,
      default: 'id'
    },
    // 自定义 pid参数名
    pid: {
      type: String,
      default: 'pid'
    },
    // 自定义根节点pid的值，用于结束递归
    rootPidValue: {
      type: [String, Number],
      default: 0
    },
    // 是否启用筛选
    filter: {
      type: Boolean,
      default: false
    },
    // 是否展开所有节点
    openAll: {
      type: Boolean,
      default: false
    },
    // 左侧自定义树节点
    renderContentLeft: Function,
    // 右侧自定义树节点
    renderContentRight: Function,
    // 穿梭框模式
    mode: {
      type: String,
      default: 'transfer'
    },
    // 通讯录模式配置项 num-> 所需右侧通讯录个数 suffix-> label后想要拼接的字段（如id，即取此条数据的id拼接在后方）connector -> 连接符（字符串）
    addressOptions: {
      type: Object,
      default: () => {
        return {
          num: 3,
          suffix: 'suffix',
          connector: '-'
        }
      }
    },
    // 穿梭后是否展开节点
    transferOpenNode: {
      type: Boolean,
      default: true
    },
    // 源数据 默认选中节点
    defaultCheckedKeys: {
      type: Array,
      default: () => []
    },
    // 源数据 默认展开节点
    defaultExpandedKeys: {
      type: Array,
      default: () => []
    },
    // 筛选placeholder
    placeholder: {
      type: String,
      default: '输入关键字进行过滤'
    },
    // 自定义筛选函数
    filterNode: Function,
    // 默认穿梭一次默认选中数据
    defaultTransfer: {
      type: Boolean,
      default: false
    },
    // 是否开启arrayToTree
    arrayToTree: {
      type: Boolean,
      default: false
    },
    // 是否启用懒加载
    lazy: {
      type: Boolean,
      default: false
    },
    // 是否右侧树也启用懒加载
    lazyRight: {
      type: Boolean,
      default: false
    },
    // 懒加载的回调函数
    lazyFn: Function,
    // 是否高亮当前选中节点，默认值是 false。
    highLight: {
      type: Boolean,
      default: false
    }
  },
  methods: {
    // -------------------------------提供输出函数---------------------
    // 添加按钮
    addToAims(emit) {
      // 获取选中通过穿梭框的keys - 仅用于传送纯净的id数组到父组件同后台通信
      const keys = this.$refs['from-tree'].getCheckedKeys()
      // 获取半选通过穿梭框的keys - 仅用于传送纯净的id数组到父组件同后台通信
      const harfKeys = this.$refs['from-tree'].getHalfCheckedKeys()
      // 选中节点数据
      const arrayCheckedNodes = this.$refs['from-tree'].getCheckedNodes()
      // 获取选中通过穿梭框的nodes - 仅用于传送选中节点数组到父组件同后台通信需求
      const nodes = JSON.parse(JSON.stringify(arrayCheckedNodes))
      // 半选中节点数据
      const arrayHalfCheckedNodes = this.$refs['from-tree'].getHalfCheckedNodes()
      // 获取半选通过穿梭框的nodes - 仅用于传送选中节点数组到父组件同后台通信需求
      const halfNodes = JSON.parse(JSON.stringify(arrayHalfCheckedNodes))

      // 自定义参数读取设置
      const children__ = this.defaultProps.children || 'children'
      const pid__ = this.pid || 'pid'
      const id__ = this['node_key'] || 'id'
      const root__ = this.rootPidValue || 0

      /*
       * 先整合目标树没有父节点的叶子节点选中，需要整理出来此叶子节点的父节点直到根节点路径 - 此时所有骨架节点已有
       * 再将所有末端叶子节点根据pid直接推入目标树即可
       * 声明新盒子将所有半选节点的子节点清除 - 只保留骨架 因为排序是先父后子 因此不存在子元素处理好插入时父元素还没处理的情况
       * 下面一二步是为了搭建出来目标树没有根节点躯干节点时的叶子选中，给此叶子搭建出根节点和躯干节点
       */

      // let不存在状态提升 因此在函数调用之前赋值 并递归为以为数组！
      // const self_to_data = JSON.stringify(this.self_to_data)
      // 第一步
      const skeletonHalfCheckedNodes = JSON.parse(
        JSON.stringify(arrayHalfCheckedNodes)
      ) // 深拷贝数据 - 半选节点
      // 筛选目标树不存在的骨架节点 - 半选内的节点
      const newSkeletonHalfCheckedNodes = []
      skeletonHalfCheckedNodes.forEach((item) => {
        // 判断目标是否已在对面存在
        const inThere = valInDeep(
          this.self_to_data,
          item[id__],
          id__,
          children__
        )
        if (!inThere.length) {
          newSkeletonHalfCheckedNodes.push(item)
        }
      })
      // 筛选到目标树不存在的骨架后在处理每个骨架节点-非末端叶子节点 - 半选节点
      newSkeletonHalfCheckedNodes.forEach((item) => {
        item[children__] = []
        root__ !== item[pid__] * 1
          ? this.$refs['to-tree'].append(item, item[pid__])
          : this.$refs['to-tree'].append(item)
      })

      // 第二步
      // 筛选目标树不存在的骨架节点 - 全选内的节点
      const newSkeletonCheckedNodes = []
      nodes.forEach((item) => {
        // 判断目标是否已在对面存在
        const inThere = valInDeep(
          this.self_to_data,
          item[id__],
          id__,
          children__
        )
        if (!inThere.length) {
          newSkeletonCheckedNodes.push(item)
        }
      })
      // 筛选到目标树不存在的骨架后在处理每个骨架节点-非末端叶子节点 - 全选节点
      newSkeletonCheckedNodes.forEach((item) => {
        if (item[children__] && item[children__].length > 0) {
          item[children__] = []
          root__ !== item[pid__] * 1
            ? this.$refs['to-tree'].append(item, item[pid__])
            : this.$refs['to-tree'].append(item)
        }
      })

      // 第三步 处理末端叶子元素 - 声明新盒子筛选出所有末端叶子节点
      const leafCheckedNodes = arrayCheckedNodes.filter(
        (item) => !item[children__] || item[children__].length === 0
      )
      // 末端叶子插入目标树
      leafCheckedNodes.forEach((item) => {
        // 判断目标是否已在对面存在
        const inThere = valInDeep(
          this.self_to_data,
          item[id__],
          id__,
          children__
        )
        if (!inThere.length) {
          this.$refs['to-tree'].append(item, item[pid__])
        }
      })

      // 递归查询data内是否存在item函数
      /* function inquireIsExist(item, strData = self_to_data) {
        // 将树形数据格式化成一维字符串 然后通过匹配来判断是否已存在
        const strItem =
          typeof item[id__] === 'number'
            ? `'${id__}':${item[id__]},`
            : `'${id__}':'${item[id__]}'`
        const reg = RegExp(strItem)
        const existed = reg.test(strData)
        return existed
      } */

      // 左侧删掉选中数据
      arrayCheckedNodes.map((item) => this.$refs['from-tree'].remove(item))

      // 处理完毕按钮恢复禁用状态
      this.from_check_keys = []

      // 目标数据节点展开
      if (this.transferOpenNode && !this.lazy) {
        this.to_expanded_keys = keys
      }

      // 传递信息给父组件
      emit &&
        this.$emit('addBtn', this.self_from_data, this.self_to_data, {
          keys,
          nodes,
          harfKeys,
          halfNodes
        })

      // 处理完毕取消选中
      this.$refs['from-tree'].setCheckedKeys([])
    },
    // 移除按钮
    removeToSource() {
      // 获取选中通过穿梭框的keys - 仅用于传送纯净的id数组到父组件同后台通信
      const keys = this.$refs['to-tree'].getCheckedKeys()
      // 获取半选通过穿梭框的keys - 仅用于传送纯净的id数组到父组件同后台通信
      const harfKeys = this.$refs['to-tree'].getHalfCheckedKeys()
      // 获取选中通过穿梭框的nodes 选中节点数据
      const arrayCheckedNodes = this.$refs['to-tree'].getCheckedNodes()
      // 获取选中通过穿梭框的nodes - 仅用于传送选中节点数组到父组件同后台通信需求
      const nodes = JSON.parse(JSON.stringify(arrayCheckedNodes))
      // 半选中节点数据
      const arrayHalfCheckedNodes = this.$refs['to-tree'].getHalfCheckedNodes()
      // 获取半选通过穿梭框的nodes - 仅用于传送选中节点数组到父组件同后台通信需求
      const halfNodes = JSON.parse(JSON.stringify(arrayHalfCheckedNodes))

      // 自定义参数读取设置
      const children__ = this.defaultProps.children || 'children'
      const pid__ = this.pid || 'pid'
      const id__ = this['node_key'] || 'id'
      const root__ = this.rootPidValue * 1 || 0

      /*
       * 先整合目标树没有父节点的叶子节点选中，需要整理出来此叶子节点的父节点直到根节点路径 - 此时所有骨架节点已有
       * 再将所有末端叶子节点根据pid直接推入目标树即可
       * 声明新盒子将所有半选节点的子节点清除 - 只保留骨架 因为排序是先父后子 因此不存在子元素处理好插入时父元素还没处理的情况
       * 下面一二步是为了搭建出来目标树没有根节点躯干节点时的叶子选中，给此叶子搭建出根节点和躯干节点
       */

      // let不存在状态提升 因此在函数调用之前赋值 并递归为以为数组！
      // const self_from_data = JSON.stringify(this.self_from_data)
      // 第一步
      const skeletonHalfCheckedNodes = JSON.parse(
        JSON.stringify(arrayHalfCheckedNodes)
      ) // 深拷贝数据 - 半选节点
      // 筛选目标树不存在的骨架节点 - 半选内的节点
      const newSkeletonHalfCheckedNodes = []
      skeletonHalfCheckedNodes.forEach((item) => {
        // 判断目标是否已在对面存在
        const inThere = valInDeep(
          this.self_from_data,
          item[id__],
          id__,
          children__
        )
        if (!inThere.length) {
          newSkeletonHalfCheckedNodes.push(item)
        }
      })
      // 筛选到目标树不存在的骨架后在处理每个骨架节点-非末端叶子节点 - 半选节点
      newSkeletonHalfCheckedNodes.forEach((item) => {
        item[children__] = []
        root__ !== item[pid__] * 1
          ? this.$refs['from-tree'].append(item, item[pid__])
          : this.$refs['from-tree'].append(item)
      })

      // 第二步
      // 筛选目标树不存在的骨架节点 - 全选内的节点
      const newSkeletonCheckedNodes = []
      nodes.forEach((item) => {
        // 判断目标是否已在对面存在
        const inThere = valInDeep(
          this.self_from_data,
          item[id__],
          id__,
          children__
        )
        if (!inThere.length) {
          newSkeletonCheckedNodes.push(item)
        }
      })
      // 筛选到目标树不存在的骨架后在处理每个骨架节点-非末端叶子节点 - 全选节点
      newSkeletonCheckedNodes.forEach((item) => {
        if (item[children__] && item[children__].length > 0) {
          item[children__] = []
          root__ !== item[pid__] * 1
            ? this.$refs['from-tree'].append(item, item[pid__])
            : this.$refs['from-tree'].append(item)
        }
      })

      // 第三步 处理末端叶子元素 - 声明新盒子筛选出所有末端叶子节点
      const leafCheckedNodes = arrayCheckedNodes.filter(
        (item) => !item[children__] || item[children__].length === 0
      )
      // 末端叶子插入目标树
      leafCheckedNodes.forEach((item) => {
        // 判断目标是否已在对面存在
        const inThere = valInDeep(
          this.self_from_data,
          item[id__],
          id__,
          children__
        )
        if (!inThere.length) {
          this.$refs['from-tree'].append(item, item[pid__])
        }
      })

      // 递归查询data内是否存在item函数
      /* function inquireIsExist(item, strData = self_from_data) {
        // 将树形数据格式化成一维字符串 然后通过匹配来判断是否已存在
        const strItem =
          typeof item[id__] === 'number'
            ? `'${id__}':${item[id__]},`
            : `'${id__}':'${item[id__]}'`
        const reg = RegExp(strItem)
        const existed = reg.test(strData)
        return existed
      } */

      // 右侧删掉选中数据
      arrayCheckedNodes.map((item) => this.$refs['to-tree'].remove(item))

      // 处理完毕按钮恢复禁用状态
      this.to_check_keys = []

      // 目标数据节点展开
      if (this.transferOpenNode && !this.lazy) {
        this.from_expanded_keys = keys
      }

      // 传递信息给父组件
      this.$emit('removeBtn', this.self_from_data, this.self_to_data, {
        keys,
        nodes,
        harfKeys,
        halfNodes
      })
      // 处理完毕取消选中
      this.$refs['to-tree'].setCheckedKeys([])
    },
    // 异步加载左侧
    leftloadNode(node, resolve) {
      this.lazyFn && this.lazyFn(node, resolve, 'left')
    },
    // 异步加载右侧
    rightloadNode(node, resolve) {
      this.lazyFn && this.lazyFn(node, resolve, 'right')
    },
    // 源树选中事件 - 是否禁用穿梭按钮
    fromTreeChecked(nodeObj, treeObj) {
      this.from_check_keys = treeObj.checkedNodes
      this.$nextTick(() => {
        this.$emit('left-check-change', nodeObj, treeObj, this.from_check_all)
      })
    },
    // 目标树选中事件 - 是否禁用穿梭按钮
    toTreeChecked(nodeObj, treeObj) {
      this.to_check_keys = treeObj.checkedNodes
      this.$nextTick(() => {
        this.$emit('right-check-change', nodeObj, treeObj, this.to_check_all)
      })
    },
    // 源数据 总全选checkbox
    fromAllBoxChange(val) {
      if (this.self_from_data.length === 0) {
        return
      }
      if (val) {
        this.from_check_keys = this.self_from_data
        this.$refs['from-tree'].setCheckedNodes(this.self_from_data)
      } else {
        this.$refs['from-tree'].setCheckedNodes([])
        this.from_check_keys = []
      }
      this.$emit('left-check-change', null, null, this.from_check_all)
    },
    // 目标数据 总全选checkbox
    toAllBoxChange(val) {
      if (this.self_to_data.length === 0) {
        return
      }
      if (val) {
        this.to_check_keys = this.self_to_data
        this.$refs['to-tree'].setCheckedNodes(this.self_to_data)
      } else {
        this.$refs['to-tree'].setCheckedNodes([])
        this.to_check_keys = []
      }
      this.$emit('right-check-change', null, null, this.to_check_all)
    },
    // 源数据 筛选
    filterNodeFrom(value, data) {
      if (this.filterNode) {
        return this.filterNode(value, data, 'form')
      }
      if (!value) return true
      return data[this.defaultProps.label].indexOf(value) !== -1
    },
    // 目标数据筛选
    filterNodeTo(value, data) {
      if (this.filterNode) {
        return this.filterNode(value, data, 'to')
      }
      if (!value) return true
      return data[this.defaultProps.label].indexOf(value) !== -1
    },
    // 通讯录模式 穿梭操作
    addressListTransfer(type) {
      // 获取选中通过穿梭框的keys - 仅用于传送纯净的id数组到父组件同后台通信
      // const keys = this.$refs['from-tree'].getCheckedKeys(true)
      // 选中节点数据
      const arrayCheckedNodes = this.$refs['from-tree'].getCheckedNodes(true)
      // 去重筛选
      let arrayDeWeighting = []
      switch (type) {
        case 0:
          arrayDeWeighting = arrayCheckedNodes.filter((item) => {
            if (
              !this.addressee.some(
                (ite) => ite[this.node_key] === item[this.node_key]
              )
            ) {
              return item
            }
          })
          this.addressee = [...this.addressee, ...arrayDeWeighting]
          break
        case 1:
          arrayDeWeighting = arrayCheckedNodes.filter((item) => {
            if (
              !this.Cc.some((ite) => ite[this.node_key] === item[this.node_key])
            ) {
              return item
            }
          })
          this.Cc = [...this.Cc, ...arrayDeWeighting]
          break
        case 2:
          arrayDeWeighting = arrayCheckedNodes.filter((item) => {
            if (
              !this.secret_receiver.some(
                (ite) => ite[this.node_key] === item[this.node_key]
              )
            ) {
              return item
            }
          })
          this.secret_receiver = [...this.secret_receiver, ...arrayDeWeighting]
          break
      }

      // 处理完毕取消选中
      this.$refs['from-tree'].setCheckedKeys([])

      // 处理完毕按钮恢复禁用状态
      this.from_check_keys = []

      // 传递信息给父组件
      this.$emit('addBtn', this.addressee, this.Cc, this.secret_receiver)
    },
    // 清理 通讯录选中 数据
    clearList(type, id) {
      switch (type) {
        case 0:
          this.addressee =
            id === 'all'
              ? []
              : this.addressee.filter((item) => item[this.node_key] !== id)
          break
        case 1:
          this.Cc =
            id === 'all'
              ? []
              : this.Cc.filter((item) => item[this.node_key] !== id)
          break
        case 2:
          this.secret_receiver = id === 'all' ? [] : this.secret_receiver.filter((item) => item[this.node_key] !== id)
          break
      }
      // 传递信息给父组件
      this.$emit('removeBtn', this.addressee, this.Cc, this.secret_receiver)
    },
    // 右侧 通讯录 上下自动
    moveUp(type) {
      if (type === 'up') {
        this.move_up = true
      } else {
        this.move_up = false
      }
    },
    // 以下为提供方法 ----------------------------------------------------------------方法--------------------------------------
    /**
     * @name 清空选中节点
     * @param {String} type left左边 right右边 all全部 默认all
     */
    clearChecked(type = 'all') {
      if (type === 'left') {
        this.$refs['from-tree'].setCheckedKeys([])
        this.from_is_indeterminate = false
        this.from_check_all = false
      } else if (type === 'right') {
        this.$refs['to-tree'].setCheckedKeys([])
        this.to_is_indeterminate = false
        this.to_check_all = false
      } else {
        this.$refs['from-tree'].setCheckedKeys([])
        this.$refs['to-tree'].setCheckedKeys([])
        this.from_is_indeterminate = false
        this.from_check_all = false
        this.to_is_indeterminate = false
        this.to_check_all = false
      }
    },
    /**
     * @name 获取选中数据
     */
    getChecked() {
      // 左侧选中信息
      const leftKeys = this.$refs['from-tree'].getCheckedKeys()
      const leftHarfKeys = this.$refs['from-tree'].getHalfCheckedKeys()
      const leftNodes = this.$refs['from-tree'].getCheckedNodes()
      const leftHalfNodes = this.$refs['from-tree'].getHalfCheckedNodes()
      // 右侧选中信息
      const rightKeys = this.$refs['to-tree'].getCheckedKeys()
      const rightHarfKeys = this.$refs['to-tree'].getHalfCheckedKeys()
      const rightNodes = this.$refs['to-tree'].getCheckedNodes()
      const rightHalfNodes = this.$refs['to-tree'].getHalfCheckedNodes()
      return {
        leftKeys,
        leftHarfKeys,
        leftNodes,
        leftHalfNodes,
        rightKeys,
        rightHarfKeys,
        rightNodes,
        rightHalfNodes
      }
    },
    /**
     * @name 设置选中数据
     * @param {Array} leftKeys 左侧ids
     * @param {Array} rightKeys 右侧ids
     */
    setChecked(leftKeys = [], rightKeys = []) {
      this.$refs['from-tree'].setCheckedKeys(leftKeys)
      this.$refs['to-tree'].setCheckedKeys(rightKeys)
    }
  },
  computed: {
    // 左侧数据
    self_from_data() {
      const from_array = [...this.from_data]
      return !this.arrayToTree
        ? from_array
        : arrayToTree(from_array, {
          id: this.node_key,
          pid: this.pid,
          children: this.defaultProps.children
        })
    },
    // 右侧数据
    self_to_data() {
      const to_array = [...this.to_data]
      return !this.arrayToTree
        ? to_array
        : arrayToTree(to_array, {
          id: this.node_key,
          pid: this.pid,
          children: this.defaultProps.children
        })
    },
    // 左侧菜单名
    fromTitle() {
      const [text] = this.title
      return text
    },
    // 右侧菜单名
    toTitle() {
      const [, text] = this.title
      return text
    },
    // 右侧菜单名2
    toTitleSecond() {
      const [, , text] = this.title
      return text
    },
    // 右侧菜单名3
    toTitleThird() {
      const [, , , text] = this.title
      return text
    },
    // 上部按钮名
    fromButton() {
      if (this.button_text === undefined) {
        return
      }

      const [text] = this.button_text
      return text
    },
    // 下部按钮名
    toButton() {
      if (this.button_text === undefined) {
        return
      }
      const [, text] = this.button_text
      return text
    }
  },
  watch: {
    // 左侧 状态监测
    from_check_keys(val) {
      if (val.length > 0) {
        // 穿梭按钮是否禁用
        this.from_disabled = false
        // 总半选是否开启
        this.from_is_indeterminate = true

        // 总全选是否开启 - 根据选中节点中为根节点的数量是否和源数据长度相等
        const allCheck = val.filter((item) => item[this.pid] === 0)
        if (allCheck.length === this.self_from_data.length) {
          // 关闭半选 开启全选
          this.from_is_indeterminate = false
          this.from_check_all = true
        } else {
          this.from_is_indeterminate = true
          this.from_check_all = false
        }
      } else {
        this.from_disabled = true
        this.from_is_indeterminate = false
        this.from_check_all = false
      }
    },
    // 右侧 状态监测
    to_check_keys(val) {
      if (val.length > 0) {
        // 穿梭按钮是否禁用
        this.to_disabled = false
        // 总半选是否开启
        this.to_is_indeterminate = true

        // 总全选是否开启 - 根据选中节点中为根节点的数量是否和源数据长度相等
        const allCheck = val.filter((item) => item[this.pid] === 0)
        if (allCheck.length === this.self_to_data.length) {
          // 关闭半选 开启全选
          this.to_is_indeterminate = false
          this.to_check_all = true
        } else {
          this.to_is_indeterminate = true
          this.to_check_all = false
        }
      } else {
        this.to_disabled = true
        this.to_is_indeterminate = false
        this.to_check_all = false
      }
    },
    // 左侧 数据筛选
    filterFrom(val) {
      this.$refs['from-tree'].filter(val)
    },
    // 右侧 数据筛选
    filterTo(val) {
      this.$refs['to-tree'].filter(val)
    },
    // 通讯录模式 右1筛选
    filterListFirst(newval, oldval) {
      if (oldval === '') {
        this.archiveFirst = this.addressee
      }
      if (newval === '') {
        this.addressee = this.archiveFirst
      }
      const reg = RegExp(newval)
      this.addressee = this.addressee.filter((item) => reg.test(item.label))
    },
    // 通讯录模式 右2筛选
    filterListSecond(newval, oldval) {
      if (oldval === '') {
        this.archiveSecond = this.Cc
      }
      if (newval === '') {
        this.Cc = this.archiveSecond
      }
      const reg = RegExp(newval)
      this.Cc = this.Cc.filter((item) => reg.test(item.label))
    },
    // 通讯录模式 右3筛选
    filterListThird(newval, oldval) {
      if (oldval === '') {
        this.archiveThird = this.secret_receiver
      }
      if (newval === '') {
        this.secret_receiver = this.archiveThird
      }
      const reg = RegExp(newval)
      this.secret_receiver = this.secret_receiver.filter((item) =>
        reg.test(item.label)
      )
    },
    // 监视默认选中
    defaultCheckedKeys: {
      handler(val) {
        this.from_check_keys = val || []
        if (this.defaultTransfer && this.from_check_keys.length) {
          this.$nextTick(() => {
            this.addToAims(false)
          })
        }
      },
      immediate: true
    },
    // 监视默认展开
    defaultExpandedKeys: {
      handler(val) {
        const _form = new Set(this.from_expanded_keys.concat(val))
        this.from_expanded_keys = [..._form]
        const _to = new Set(this.to_expanded_keys.concat(val))
        this.to_expanded_keys = [..._to]
      },
      immediate: true
    },
    // 收件人默认值监测
    sjr: {
      handler(val) {
        this.addressee.push(...val)
      },
      immediate: true
    },
    // 抄送人默认值监测
    csr: {
      handler(val) {
        this.Cc.push(...val)
      },
      immediate: true
    },
    // 密送人默认值监测
    msr: {
      handler(val) {
        this.secret_receiver.push(...val)
      },
      immediate: true
    }
  }
}
</script>

<style lang="scss">
@import "./clear.css";

.wl-transfer {
  position: relative;
  overflow: hidden;

  .el-tree {
    min-width: 100%;
    display: inline-block !important;
  }

  .transfer-left {
    position: absolute;
    top: 0;
    left: 0;
  }

  .transfer-right {
    position: absolute;
    top: 0;
    right: 0;
  }

  .transfer-right-item {
    height: calc((100% - 41px) / 2);
  }

  .transfer-right-small {
    height: 41px;
  }

  .transfer-right-only {
    height: 100%;
  }

  .transfer-main {
    padding: 10px;
    height: calc(100% - 41px);
    box-sizing: border-box;
    overflow: auto;
  }

  .transfer-left,
  .transfer-right {
    border: 1px solid #ebeef5;
    width: 40%;
    height: 100%;
    box-sizing: border-box;
    border-radius: 5px;
    vertical-align: middle;
  }

  .transfer-center {
    position: absolute;
    top: 50%;
    left: 40%;
    width: 20%;
    transform: translateY(-50%);
    text-align: center;
  }

  .transfer-center-item {
    padding: 10px;
    overflow: hidden;
  }

  .address-list-center {
    height: 100%;
  }

  .address-list-center > .transfer-center-item {
    height: 50%;
    padding: 70px 10px 0;
    box-sizing: border-box;
    overflow: hidden;
  }

  .address-list-center > .address-only-item {
    height: 100%;
    position: relative;
  }

  .address-only-item > .address-first-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .transfer-title {
    border-bottom: 1px solid #ebeef5;
    padding: 0 15px;
    height: 40px;
    line-height: 40px;
    color: #333;
    font-size: 16px;
    background-color: #f5f7fa;
  }

  .transfer-title .el-checkbox {
    margin-right: 10px;
  }

  .filter-tree {
    margin-bottom: 10px;
  }

  .address-list-ul {
    padding-bottom: 20px;
  }

  .address-list-li {
    position: relative;
    padding: 4px 24px 4px 4px;
    border-radius: 3px;
    overflow: hidden; /*超出部分隐藏*/
    white-space: nowrap; /*不换行*/
    text-overflow: ellipsis; /*超出部分文字以...显示*/
  }

  .address-list-li:hover {
    background-color: #f5f7fa;
  }

  .address-list-li:hover .address-list-del {
    display: block;
  }

  .address-list-del {
    display: none;
    position: absolute;
    top: 50%;
    right: 2px;
    margin-top: -10px;
    width: 20px;
    height: 20px;
    line-height: 20px;
    border-radius: 50%;
    text-align: center;
    background-color: #fef0f0;
    color: #f56c6c;
    cursor: pointer;
  }

  .u-clear {
    float: right;
    color: #67c23a;
    font-size: 14px;
    cursor: pointer;
  }

  .move_up_img {
    float: right;
    margin-top: 10px;
    width: 20px;
    height: 20px;
    cursor: pointer;
  }

  .move_down_img {
    transform: rotate(180deg);
  }
}
</style>
